| In millions, except per share items | Jun-30-23 | Jun-30-22 | Mar-31-22 | Jun-30-21 | Mar-31-21 | Dec-31-20 | Sep-30-20 | Jun-30-20 |
| | 10-Q | 10-Q | 10-Q | 10-Q | 10-Q | 10-K | 10-Q | 10-Q |
| Total revenue | 453.1 | 499.3 | 501.5 | 499.8 | 482.6 | 489.3 | 473.5 | 459.5 |
| Total revenue growth | -9.3% | -0.1% | 3.9% | 8.8% | 3.6% | -2.0% | 0.3% | -0.2% |
| Costs and expenses: | | | | | | | | |
| Cost of sales | | | | | | | | |
| Selling, general and administrative expenses | 107.4 | 113.1 | 118.2 | 114.0 | 114.1 | 120.5 | 115.4 | 113.8 |
| Research and development expenses | 6.8 | 8.8 | 7.6 | 7.4 | 7.5 | 8.1 | 7.7 | 7.4 |
| Depreciation and amortization | 105.6 | 116.6 | 120.4 | 119.0 | 129.3 | 132.9 | 129.8 | 129.9 |
| Impairment of long-lived assets | | 0.7 | | 0.0 | 0.2 | | | |
| Total costs and expenses | 408.7 | 453.4 | 456.5 | 434.5 | 429.1 | 459.2 | 436.5 | 424.7 |
| Operating income (loss) | 44.4 | 45.9 | 45.1 | 65.3 | 53.5 | 30.1 | 37.0 | 34.8 |
| Operating margin | 9.8% | 9.2% | 9.0% | 13.1% | 11.1% | 6.2% | 7.8% | 7.6% |
| |
| Other income (expense): | | | | | | | | |
| Interest income, net | 23.5 | 9.1 | 6.4 | 5.2 | 5.9 | 6.3 | 7.4 | 10.8 |
| Interest expense, net of amounts capitalized | -13.2 | -14.3 | -15.0 | -28.9 | -34.7 | -35.5 | -38.0 | -38.3 |
| Gains (losses) on investments, net | -5.5 | -22.5 | 80.7 | 30.6 | 78.6 | 6.5 | 15.0 | -6.1 |
| Equity in earnings (losses) of unconsolidated affiliates, net | -0.5 | -1.3 | -1.7 | -4.0 | 1.4 | -1.4 | -2.1 | -6.3 |
| Other, net | 9.4 | 2.7 | -0.2 | -12.8 | -0.9 | 0.6 | 0.3 | -0.4 |
| Total other income (expense), net | 19.6 | -30.0 | 76.7 | -39.6 | 46.3 | -14.9 | -27.0 | -38.8 |
| Income (loss) before income taxes | 27.9 | 15.9 | 121.7 | 56.2 | 99.7 | 15.2 | 26.2 | -4.0 |
| Income tax benefit (provision), net | -18.8 | -5.4 | -32.8 | -21.2 | -22.1 | -17.8 | -3.0 | -10.9 |
| Net income (loss) | 9.1 | 10.5 | 88.9 | 35.0 | 77.6 | -2.6 | 23.3 | -14.8 |
| Net income (loss) attributable to EchoStar Corporation common stock | 11.2 | 13.9 | 91.4 | 37.3 | 78.5 | 0.1 | 25.4 | -11.4 |
| |
| Earnings (losses) per share - Class A and B common stock: | | | | | | | | |
| Basic (in dollars per share) | $0.13 | $0.16 | $1.07 | $0.41 | $0.84 | | $0.26 | ($0.12) |
| Diluted (in dollars per share) | $0.13 | $0.16 | $1.06 | $0.41 | $0.84 | | $0.26 | ($0.12) |